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Anonymous users2024-01-24It's impossible.,You have an ID number for each dish.,Each + number will correspond to a unique dish to operate.,As for how to bind this,I believe it shouldn't be too problematic.,I don't know if this is a web project or a local project.,Web then refer to html.,If it's local, you need to handle the event of the button.。
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Anonymous users2024-01-23The concept of triggers is who taught you, you this + - is nothing more than a button, corresponding to a piece of JS code.
function book (dish ID, + or - flag).
Store it however you want in the background.
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Anonymous users2024-01-22Use session for storage.
You need a computer to be the print server, or you can purchase special hardware for the print server. >>>More
After reference, improve.
Reply to your own soft answers. >>>More
According to your description, the problem is in the BoxLayout class, can't be shared indicates that the permission setting of the class is incorrect, please check it carefully.
The mod is % which means remaining.
Like int a; a=10%7；A is 3 >>>More
It's too far from the door.